Profile of John Ternus, likely Tim Cook successor, who shapes Apple's hardware portfolio, is expanding his domain within Apple, and his visibility to the public (Mark Gurman/Bloomberg)

Mark Gurman / Bloomberg: Profile of John Ternus, likely Tim Cook successor, who shapes Apple's hardware portfolio, is expanding his domain within Apple, and his visibility to the public — Current and former employees and executives who've worked closely with Ternus, most of whom requested anonymity to discuss …